LOW-LOSS AND HIGH-TEMPERATURE-RESISTANT OPTICAL FIBER

摘要

A low-loss and high-temperature-resistant optical fiber (101) is composed of a glass core layer (102), a glass cladding (103) surrounding the outer surface of the glass core layer (102), a polymer coating (104) arranged on the cladding, and a metal coating (106) arranged on the polymer coating (104). Alternatively, an adhesive layer (205) is arranged between the polymer coating (104) and the metal coating (106), so that the metal coating (106) is bonded with the polymer coating (104) more firmly. Compared with traditional polymer coating optical fibers not coated with the metal coating (106), the maximum working temperature of the low-loss and high-temperature-resistant optical fiber with the metal coating (106) can be increased by 50-300 ℃, without obviously changing the various optical performances and the mechanical strength of the optical fiber .